./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/lazy01.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/lazy01.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread/lazy01.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/lazy01.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 17:30:44,932 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:30:45,007 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:30:45,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:30:45,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:30:45,025 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:30:45,026 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:30:45,026 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:30:45,027 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:30:45,027 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:30:45,027 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:30:45,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:30:45,028 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:30:45,028 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:30:45,029 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:30:45,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:30:45,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:30:45,030 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:30:45,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:30:45,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:30:45,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:30:45,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:30:45,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:30:45,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:30:45,032 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:30:45,032 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:30:45,032 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:30:45,033 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:30:45,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:30:45,033 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:30:45,034 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:30:45,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:30:45,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:30:45,034 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:30:45,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:30:45,035 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:30:45,035 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:30:45,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:30:45,036 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:30:45,036 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:30:45,036 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:30:45,037 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:30:45,037 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:30:45,037 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:30:45,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:30:45,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:30:45,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:30:45,252 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:30:45,266 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:30:45,268 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2024-01-31 17:30:46,412 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:30:46,646 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:30:46,646 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2024-01-31 17:30:46,655 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe5fc6431/3f26c1266a2b4e0d96c4a2639f87dccf/FLAGfa7846a79 [2024-01-31 17:30:46,677 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe5fc6431/3f26c1266a2b4e0d96c4a2639f87dccf [2024-01-31 17:30:46,679 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:30:46,681 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:30:46,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/lazy01.yml/witness.yml [2024-01-31 17:30:46,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:30:46,748 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:30:46,748 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:30:46,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:30:46,753 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:30:46,754 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:30:46" (1/2) ... [2024-01-31 17:30:46,754 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e00e56e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:30:46, skipping insertion in model container [2024-01-31 17:30:46,755 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:30:46" (1/2) ... [2024-01-31 17:30:46,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5bfa85de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:30:46, skipping insertion in model container [2024-01-31 17:30:46,756 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:30:46" (2/2) ... [2024-01-31 17:30:46,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e00e56e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:30:46, skipping insertion in model container [2024-01-31 17:30:46,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:30:46" (2/2) ... [2024-01-31 17:30:46,757 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:30:46,795 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:30:46,796 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] ((3 <= data) && ((unsigned long )arg == 0UL)) && (data != 0) [2024-01-31 17:30:46,834 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:30:47,048 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2024-01-31 17:30:47,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:30:47,069 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:30:47,115 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] Start Parsing Local [2024-01-31 17:30:47,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:30:47,180 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:30:47,181 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:30:47 WrapperNode [2024-01-31 17:30:47,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:30:47,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:30:47,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:30:47,183 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:30:47,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:30:47" (1/1) ... [2024-01-31 17:30:47,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:30:47" (1/1) ... [2024-01-31 17:30:47,235 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 61 [2024-01-31 17:30:47,235 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:30:47,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:30:47,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:30:47,236 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:30:47,244 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:30:47" (1/1) ... [2024-01-31 17:30:47,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:30:47" (1/1) ... [2024-01-31 17:30:47,256 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:30:47" (1/1) ... [2024-01-31 17:30:47,283 INFO L175 MemorySlicer]: Split 13 memory accesses to 5 slices as follows [2, 5, 2, 2, 2]. 38 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0, 0]. The 3 writes are split as follows [0, 0, 1, 1, 1]. [2024-01-31 17:30:47,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:30:47" (1/1) ... [2024-01-31 17:30:47,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:30:47" (1/1) ... [2024-01-31 17:30:47,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:30:47" (1/1) ... [2024-01-31 17:30:47,294 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:30:47" (1/1) ... [2024-01-31 17:30:47,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:30:47" (1/1) ... [2024-01-31 17:30:47,296 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:30:47" (1/1) ... [2024-01-31 17:30:47,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:30:47,307 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:30:47,307 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:30:47,307 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:30:47,308 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:30:47" (1/1) ... [2024-01-31 17:30:47,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:30:47,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:30:47,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 17:30:47,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 17:30:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:30:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:30:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:30:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:30:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 17:30:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:30:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:30:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:30:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:30:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 17:30:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 17:30:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:30:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:30:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:30:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:30:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:30:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-31 17:30:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:30:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:30:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:30:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:30:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:30:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:30:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:30:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:30:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-31 17:30:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:30:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:30:47,421 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:30:47,549 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:30:47,551 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:30:47,701 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:30:47,701 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:30:47,786 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:30:47,786 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:30:47,787 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:30:47 BoogieIcfgContainer [2024-01-31 17:30:47,787 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:30:47,789 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:30:47,789 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:30:47,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:30:47,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:30:46" (1/4) ... [2024-01-31 17:30:47,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634af2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:30:47, skipping insertion in model container [2024-01-31 17:30:47,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:30:46" (2/4) ... [2024-01-31 17:30:47,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634af2a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:30:47, skipping insertion in model container [2024-01-31 17:30:47,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:30:47" (3/4) ... [2024-01-31 17:30:47,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634af2a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:30:47, skipping insertion in model container [2024-01-31 17:30:47,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:30:47" (4/4) ... [2024-01-31 17:30:47,794 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2024-01-31 17:30:47,806 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:30:47,806 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-31 17:30:47,807 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:30:47,856 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 17:30:47,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 37 transitions, 95 flow [2024-01-31 17:30:47,910 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-01-31 17:30:47,911 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 17:30:47,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 34 events. 1/34 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-01-31 17:30:47,915 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 37 transitions, 95 flow [2024-01-31 17:30:47,918 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 28 transitions, 71 flow [2024-01-31 17:30:47,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:30:47,936 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@56ac5ca7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:30:47,936 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-31 17:30:47,950 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:30:47,951 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2024-01-31 17:30:47,951 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-31 17:30:47,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:30:47,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:30:47,952 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 17:30:47,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:30:47,956 INFO L85 PathProgramCache]: Analyzing trace with hash 813624236, now seen corresponding path program 1 times [2024-01-31 17:30:47,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:30:47,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825481661] [2024-01-31 17:30:47,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:30:47,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:30:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:30:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:30:48,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:30:48,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825481661] [2024-01-31 17:30:48,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825481661] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:30:48,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:30:48,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:30:48,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120948529] [2024-01-31 17:30:48,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:30:48,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:30:48,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:30:48,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:30:48,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:30:48,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-01-31 17:30:48,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:30:48,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:30:48,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-01-31 17:30:48,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:30:48,376 INFO L124 PetriNetUnfolderBase]: 487/885 cut-off events. [2024-01-31 17:30:48,376 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-01-31 17:30:48,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1756 conditions, 885 events. 487/885 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4444 event pairs, 203 based on Foata normal form. 4/883 useless extension candidates. Maximal degree in co-relation 1479. Up to 725 conditions per place. [2024-01-31 17:30:48,385 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 29 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-01-31 17:30:48,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 38 transitions, 161 flow [2024-01-31 17:30:48,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:30:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:30:48,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-01-31 17:30:48,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-01-31 17:30:48,396 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 71 flow. Second operand 3 states and 63 transitions. [2024-01-31 17:30:48,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 38 transitions, 161 flow [2024-01-31 17:30:48,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 149 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 17:30:48,403 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 81 flow [2024-01-31 17:30:48,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2024-01-31 17:30:48,407 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2024-01-31 17:30:48,407 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 81 flow [2024-01-31 17:30:48,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:30:48,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:30:48,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:30:48,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:30:48,409 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 17:30:48,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:30:48,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1215586892, now seen corresponding path program 1 times [2024-01-31 17:30:48,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:30:48,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684139611] [2024-01-31 17:30:48,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:30:48,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:30:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:30:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:30:48,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:30:48,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684139611] [2024-01-31 17:30:48,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684139611] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:30:48,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:30:48,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:30:48,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277017591] [2024-01-31 17:30:48,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:30:48,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:30:48,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:30:48,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:30:48,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:30:48,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-01-31 17:30:48,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:30:48,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:30:48,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-01-31 17:30:48,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:30:48,633 INFO L124 PetriNetUnfolderBase]: 419/763 cut-off events. [2024-01-31 17:30:48,633 INFO L125 PetriNetUnfolderBase]: For 113/123 co-relation queries the response was YES. [2024-01-31 17:30:48,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1646 conditions, 763 events. 419/763 cut-off events. For 113/123 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3645 event pairs, 79 based on Foata normal form. 19/778 useless extension candidates. Maximal degree in co-relation 914. Up to 507 conditions per place. [2024-01-31 17:30:48,638 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 36 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-01-31 17:30:48,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 199 flow [2024-01-31 17:30:48,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:30:48,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:30:48,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-01-31 17:30:48,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5472972972972973 [2024-01-31 17:30:48,645 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 81 flow. Second operand 4 states and 81 transitions. [2024-01-31 17:30:48,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 199 flow [2024-01-31 17:30:48,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 46 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:30:48,651 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 90 flow [2024-01-31 17:30:48,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2024-01-31 17:30:48,651 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2024-01-31 17:30:48,652 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 90 flow [2024-01-31 17:30:48,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:30:48,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:30:48,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:30:48,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:30:48,652 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 17:30:48,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:30:48,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1474937563, now seen corresponding path program 1 times [2024-01-31 17:30:48,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:30:48,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78648073] [2024-01-31 17:30:48,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:30:48,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:30:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:30:48,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:30:48,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:30:48,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78648073] [2024-01-31 17:30:48,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78648073] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:30:48,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:30:48,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:30:48,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307140334] [2024-01-31 17:30:48,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:30:48,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:30:48,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:30:48,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:30:48,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:30:48,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-01-31 17:30:48,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:30:48,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:30:48,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-01-31 17:30:48,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:30:48,829 INFO L124 PetriNetUnfolderBase]: 367/663 cut-off events. [2024-01-31 17:30:48,830 INFO L125 PetriNetUnfolderBase]: For 279/290 co-relation queries the response was YES. [2024-01-31 17:30:48,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1518 conditions, 663 events. 367/663 cut-off events. For 279/290 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3027 event pairs, 63 based on Foata normal form. 16/674 useless extension candidates. Maximal degree in co-relation 866. Up to 341 conditions per place. [2024-01-31 17:30:48,834 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 37 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2024-01-31 17:30:48,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 48 transitions, 216 flow [2024-01-31 17:30:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:30:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:30:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-01-31 17:30:48,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5337837837837838 [2024-01-31 17:30:48,835 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 90 flow. Second operand 4 states and 79 transitions. [2024-01-31 17:30:48,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 48 transitions, 216 flow [2024-01-31 17:30:48,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 17:30:48,837 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 98 flow [2024-01-31 17:30:48,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2024-01-31 17:30:48,838 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2024-01-31 17:30:48,838 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 98 flow [2024-01-31 17:30:48,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:30:48,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:30:48,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:30:48,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:30:48,839 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 17:30:48,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:30:48,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1656894545, now seen corresponding path program 1 times [2024-01-31 17:30:48,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:30:48,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127489754] [2024-01-31 17:30:48,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:30:48,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:30:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:30:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:30:48,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:30:48,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127489754] [2024-01-31 17:30:48,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127489754] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:30:48,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:30:48,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:30:48,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472210239] [2024-01-31 17:30:48,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:30:48,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:30:48,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:30:48,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:30:48,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:30:48,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-01-31 17:30:48,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:30:48,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:30:48,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-01-31 17:30:48,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:30:48,965 INFO L124 PetriNetUnfolderBase]: 139/361 cut-off events. [2024-01-31 17:30:48,965 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-01-31 17:30:48,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 361 events. 139/361 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1589 event pairs, 40 based on Foata normal form. 58/399 useless extension candidates. Maximal degree in co-relation 387. Up to 173 conditions per place. [2024-01-31 17:30:48,967 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 28 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2024-01-31 17:30:48,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 191 flow [2024-01-31 17:30:48,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:30:48,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:30:48,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-01-31 17:30:48,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6306306306306306 [2024-01-31 17:30:48,969 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 98 flow. Second operand 3 states and 70 transitions. [2024-01-31 17:30:48,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 191 flow [2024-01-31 17:30:48,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 179 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 17:30:48,971 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 96 flow [2024-01-31 17:30:48,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-01-31 17:30:48,971 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2024-01-31 17:30:48,972 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 96 flow [2024-01-31 17:30:48,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:30:48,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:30:48,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:30:48,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:30:48,972 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 17:30:48,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:30:48,973 INFO L85 PathProgramCache]: Analyzing trace with hash 260632040, now seen corresponding path program 1 times [2024-01-31 17:30:48,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:30:48,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018787328] [2024-01-31 17:30:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:30:48,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:30:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:30:49,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:30:49,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:30:49,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018787328] [2024-01-31 17:30:49,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018787328] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:30:49,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:30:49,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:30:49,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699794720] [2024-01-31 17:30:49,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:30:49,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:30:49,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:30:49,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:30:49,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:30:49,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-01-31 17:30:49,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:30:49,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:30:49,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-01-31 17:30:49,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:30:49,210 INFO L124 PetriNetUnfolderBase]: 276/534 cut-off events. [2024-01-31 17:30:49,210 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2024-01-31 17:30:49,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1281 conditions, 534 events. 276/534 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2251 event pairs, 40 based on Foata normal form. 0/534 useless extension candidates. Maximal degree in co-relation 613. Up to 208 conditions per place. [2024-01-31 17:30:49,213 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 54 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2024-01-31 17:30:49,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 61 transitions, 320 flow [2024-01-31 17:30:49,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:30:49,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:30:49,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-01-31 17:30:49,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-01-31 17:30:49,214 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 96 flow. Second operand 5 states and 87 transitions. [2024-01-31 17:30:49,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 61 transitions, 320 flow [2024-01-31 17:30:49,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 61 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:30:49,216 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 95 flow [2024-01-31 17:30:49,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=95, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2024-01-31 17:30:49,216 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2024-01-31 17:30:49,216 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 95 flow [2024-01-31 17:30:49,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:30:49,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:30:49,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:30:49,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:30:49,217 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 17:30:49,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:30:49,217 INFO L85 PathProgramCache]: Analyzing trace with hash -32093962, now seen corresponding path program 1 times [2024-01-31 17:30:49,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:30:49,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094066986] [2024-01-31 17:30:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:30:49,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:30:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 17:30:49,235 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 17:30:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 17:30:49,259 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 17:30:49,260 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 17:30:49,260 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-01-31 17:30:49,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-01-31 17:30:49,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2024-01-31 17:30:49,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-01-31 17:30:49,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-01-31 17:30:49,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-01-31 17:30:49,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 7 remaining) [2024-01-31 17:30:49,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:30:49,262 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-01-31 17:30:49,266 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 17:30:49,266 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 17:30:49,290 INFO L503 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-01-31 17:30:49,290 INFO L504 ceAbstractionStarter]: WitnessConsidered=1 [2024-01-31 17:30:49,290 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 05:30:49 BasicIcfg [2024-01-31 17:30:49,290 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 17:30:49,291 INFO L158 Benchmark]: Toolchain (without parser) took 2543.33ms. Allocated memory was 159.4MB in the beginning and 207.6MB in the end (delta: 48.2MB). Free memory was 99.4MB in the beginning and 123.5MB in the end (delta: -24.2MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2024-01-31 17:30:49,291 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 159.4MB. Free memory was 120.9MB in the beginning and 120.8MB in the end (delta: 105.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 17:30:49,291 INFO L158 Benchmark]: Witness Parser took 0.12ms. Allocated memory is still 159.4MB. Free memory is still 102.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:30:49,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 433.34ms. Allocated memory is still 159.4MB. Free memory was 99.0MB in the beginning and 73.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-01-31 17:30:49,292 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.26ms. Allocated memory is still 159.4MB. Free memory was 73.8MB in the beginning and 71.7MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:30:49,292 INFO L158 Benchmark]: Boogie Preprocessor took 70.90ms. Allocated memory is still 159.4MB. Free memory was 71.7MB in the beginning and 69.3MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-31 17:30:49,292 INFO L158 Benchmark]: RCFGBuilder took 480.09ms. Allocated memory was 159.4MB in the beginning and 207.6MB in the end (delta: 48.2MB). Free memory was 69.3MB in the beginning and 155.4MB in the end (delta: -86.2MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2024-01-31 17:30:49,293 INFO L158 Benchmark]: TraceAbstraction took 1501.75ms. Allocated memory is still 207.6MB. Free memory was 154.4MB in the beginning and 123.5MB in the end (delta: 30.8MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2024-01-31 17:30:49,294 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 159.4MB. Free memory was 120.9MB in the beginning and 120.8MB in the end (delta: 105.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Witness Parser took 0.12ms. Allocated memory is still 159.4MB. Free memory is still 102.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 433.34ms. Allocated memory is still 159.4MB. Free memory was 99.0MB in the beginning and 73.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.26ms. Allocated memory is still 159.4MB. Free memory was 73.8MB in the beginning and 71.7MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 70.90ms. Allocated memory is still 159.4MB. Free memory was 71.7MB in the beginning and 69.3MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 480.09ms. Allocated memory was 159.4MB in the beginning and 207.6MB in the end (delta: 48.2MB). Free memory was 69.3MB in the beginning and 155.4MB in the end (delta: -86.2MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1501.75ms. Allocated memory is still 207.6MB. Free memory was 154.4MB in the beginning and 123.5MB in the end (delta: 30.8MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, t1={7:0}, t2={5:0}, t3={6:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, t1={7:0}, t2={5:0}, t3={6:0}] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}, t1={7:0}, t2={5:0}, t3={6:0}] [L721] COND TRUE 3 data >= 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L722] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[3],IdentifierExpression[data]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[COMPNEQ,IdentifierExpression[data],IntegerLiteral[0]]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L722] 3 reach_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 63 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 110 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 99 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 317 IncrementalHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 5 mSDtfsCounter, 317 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=3, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 193 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-01-31 17:30:49,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE